I feel like I am at the end of my rope, and I really had no clue where to put this but I really just want some advice on what I should do.
I feel like I am going mad and just banging my head against a brick wall on lots of different levels. This will be long no doubt, so will try and make it as brief as I can.
My DD is 9. For the past 3+ years, she has been wetting herself. It started off just at nights, then progressed to daytime as well. We take her to a clinic at the hospital who have gotten us to give her lactulose twice a day to help her clear her bowels, as well as to drink more and eat more healthily. We've been seeing this clinic for over a year, and though I do my best to remind DD to drink, eat more fruit/veg, go to the toilet etc, we are not going anywhere. This past week, DD hasn't been drinking her water bottle at school (she needs to be drinking at least 1.5 litres a day). She's been wetting herself before we even leave the house to go to school and everytime she does wet herself, she doesn't change.
Yesterday I realised before we left for school she had wet herself and hadn't changed. I told her off and said that after school she was going to sit down for 20 minutes doing nothing but write down why she thinks she wets herself and doesn't change and isn't making a considerable effort to improve. She wrote she gets easily distracted and too absorbed in other things to remember. I understand this, she is 9 and playing a game or reading is much more important to her than remembering to go toilet or to drink. However, even after we had a long discussion last night about it, this morning before we went to school, she had wet herself again and had been like that for 20 minutes without changing. I am so angry, and this was 1.5 hours ago and I am still so angry. I told her she will be punished when she comes home, and I am going to make her change her bed and do her washing, as the woman we see at the clinic has told us that DD needs to now take responsibility for her washing because at the moment, she has no incentive to change really.
On top of that, I'm having such issues with money. I'm 36 weeks pregnant. DP works nights and in London. He spends about £250-300 on travel each month. At the end of each month, we are struggling. We are behind in our rent and in some of our utility bills. At the beginning of the year, I had to take out a DRO as I just couldn't afford my bills/debts. We have more going on than we do coming in. DP has put in for a transfer at work to move to a more local location particularly since he's rarely going to be around when baby is here with the way he works (works nightshifts and sleeps during day). I've been looking out for jobs for him but they are few and far between. I feel like we are stuck and there's nothing we can do at the moment. I've also had my ex's mother contact me to tell me that he is struggling with money at the moment and whether I would take a reduction in the amount he gives me over the next couple of months, despite that he works full time and lives at home with his parents and doesn't pay them anything... 
I was on anti-deps before I was pregnant, and have come off them because I am PG, but I'm really struggling at the moment. I just want to cry and cry, though I know there's no point as it'll get me nowhere. But I just feel very much alone and frustrated and useless at the moment. I have noone I can talk to as DP just says "oh don't worry, we'll be fine, we always are" but we are never fine because there is always a problem! I just don't want to do this anymore.